CVE-2022-50095
published 2025-06-18CVE-2022-50095: In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: Cleanup CPU timers before freeing them during exec Commit 55e8c8eb2c7b…
PriorityP338high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.21%
11.7th percentile
In the Linux kernel, the following vulnerability has been resolved:
posix-cpu-timers: Cleanup CPU timers before freeing them during exec
Commit 55e8c8eb2c7b ("posix-cpu-timers: Store a reference to a pid not a
task") started looking up tasks by PID when deleting a CPU timer.
When a non-leader thread calls execve, it will switch PIDs with the leader
process. Then, as it calls exit_itimers, posix_cpu_timer_del cannot find
the task because the timer still points out to the old PID.
That means that armed timers won't be disarmed, that is, they won't be
removed from the timerqueue_list. exit_itimers will still release their
memory, and when that list is later processed, it leads to a
use-after-free.
Clean up the timers from the de-threaded task before freeing them. This
prevents a reported use-after-free.
Affected
35 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.0.2-1 (bookworm) | linux 6.0.2-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59 < 541840859ace9c2ccebc32fa9e376c7bd3def490 | 541840859ace9c2ccebc32fa9e376c7bd3def490 |
| linux | linux | >= 55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59 < 9e255ed238fc67058df87b0388ad6d4b2ef3a2bd | 9e255ed238fc67058df87b0388ad6d4b2ef3a2bd |
| linux | linux | >= 55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59 < e8cb6e8fd9890780f1bfcf5592889e1b879e779c | e8cb6e8fd9890780f1bfcf5592889e1b879e779c |
| linux | linux | >= 55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59 < b2fc1723eb65abb83e00d5f011de670296af0b28 | b2fc1723eb65abb83e00d5f011de670296af0b28 |
| linux | linux | >= 55e8c8eb2c7b6bf30e99423ccfe7ca032f498f59 < e362359ace6f87c201531872486ff295df306d13 | e362359ace6f87c201531872486ff295df306d13 |
| linux | linux_kernel | >= 0 < 5.10.140-1 | 5.10.140-1 |
| linux | linux_kernel | >= 0 < 6.0.2-1 | 6.0.2-1 |
| linux | linux_kernel | >= 0 < 6.0.2-1 | 6.0.2-1 |
| linux | linux_kernel | >= 0 < 6.0.2-1 | 6.0.2-1 |
| linux | linux_kernel | >= 0 < 4.4.0-276.310 | 4.4.0-276.310 |
| linux | linux_kernel | >= 0 < 4.15.0-245.257 | 4.15.0-245.257 |
| linux | linux_kernel | >= 0 < 5.4.0-224.244 | 5.4.0-224.244 |
| linux | linux_kernel | >= 5.11 < 5.15.61 | 5.15.61 |
| linux | linux_kernel | >= 5.16 < 5.18.18 | 5.18.18 |
| linux | linux_kernel | >= 5.19 < 5.19.2 | 5.19.2 |
| linux | linux_kernel | >= 5.7 < 5.10.137 | 5.10.137 |
| msrc | windows_10 | — | — |
| msrc | windows_10_version_1607 | — | — |
| msrc | windows_10_version_1809 | — | — |
| msrc | windows_10_version_1909 | — | — |
| msrc | windows_10_version_20h2 | — | — |
| msrc | windows_10_version_21h1 | — | — |
| msrc | windows_10_version_21h2 | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
vendor_msrc7.0HIGH
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Red Hat
kernel: posix-cpu-timers: Cleanup CPU timers before freeing them during exec
vendor_redhat·2025-06-18·CVSS 7.8
CVE-2022-50095 [HIGH] CWE-459 kernel: posix-cpu-timers: Cleanup CPU timers before freeing them during exec
kernel: posix-cpu-timers: Cleanup CPU timers before freeing them during exec
In the Linux kernel, the following vulnerability has been resolved:
posix-cpu-timers: Cleanup CPU timers before freeing them during exec
Commit 55e8c8eb2c7b ("posix-cpu-timers: Store a reference to a pid not a
task") started looking up tasks by PID when deleting a CPU timer.
When a non-leader thread calls execve, it will switch PIDs with the leader
process. Then, as it calls exit_itimers, posix_cpu_timer_del cannot find
the task because the timer still points out to the old PID.
That means that armed timers won't be disarmed, that is, they won't be
removed from the timerqueue_list. exit_itimers will still release their
memory, and when that list is later processed, it leads to a
use-after-free.
Clean up the timer
Debian
CVE-2022-50095: linux - In the Linux kernel, the following vulnerability has been resolved: posix-cpu-t...
vendor_debian·2022·CVSS 7.8
CVE-2022-50095 [HIGH] CVE-2022-50095: linux - In the Linux kernel, the following vulnerability has been resolved: posix-cpu-t...
In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: Cleanup CPU timers before freeing them during exec Commit 55e8c8eb2c7b ("posix-cpu-timers: Store a reference to a pid not a task") started looking up tasks by PID when deleting a CPU timer. When a non-leader thread calls execve, it will switch PIDs with the leader process. Then, as it calls exit_itimers, posix_cpu_timer_del cannot find the task because the timer still points out to the old PID. That means that armed timers won't be disarmed, that is, they won't be removed from the timerqueue_list. exit_itimers will still release their memory, and when that list is later processed, it leads to a use-after-free. Clean up the timers from the de-threaded task before freeing them. This prevents a reported use-
OSV
linux-iot vulnerabilities
osv·2026-01-12·CVSS 7.8
CVE-2022-49026 linux-iot vulnerabilities
linux-iot vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- ACPI drivers;
- InfiniBand drivers;
- Media drivers;
- Network drivers;
- Pin controllers subsystem;
- AFS file system;
- F2FS file system;
- Tracing infrastructure;
- Memory management;
- Appletalk network protocol;
- Netfilter;
(CVE-2022-49026, CVE-2022-49390, CVE-2024-47691, CVE-2024-49935,
CVE-2024-50067, CVE-2024-50095, CVE-2024-50196, CVE-2024-53090,
CVE-2024-53218, CVE-2025-21855, CVE-2025-37958, CVE-2025-38666,
CVE-2025-39964, CVE-2025-39993, CVE-2025-40018)
OSV
linux-raspi, linux-raspi-5.4 vulnerabilities
osv·2026-01-06·CVSS 7.8
linux-raspi, linux-raspi-5.4 vulnerabilities
linux-raspi, linux-raspi-5.4 vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- ACPI drivers;
- InfiniBand drivers;
- Media drivers;
- Network drivers;
- Pin controllers subsystem;
- AFS file system;
- F2FS file system;
- Tracing infrastructure;
- Memory management;
- Appletalk network protocol;
- Netfilter;
(CVE-2022-49026, CVE-2022-49390, CVE-2024-47691, CVE-2024-49935,
CVE-2024-50067, CVE-2024-50095, CVE-2024-50196, CVE-2024-53090,
CVE-2024-53218, CVE-2025-21855, CVE-2025-37958, CVE-2025-38666,
CVE-2025-39964, CVE-2025-39993, CVE-2025-40018)
OSV
linux-oracle-5.4 vulnerabilities
osv·2025-12-19·CVSS 7.8
linux-oracle-5.4 vulnerabilities
linux-oracle-5.4 vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- ACPI drivers;
- InfiniBand drivers;
- Media drivers;
- Network drivers;
- Pin controllers subsystem;
- AFS file system;
- F2FS file system;
- Tracing infrastructure;
- Memory management;
- Appletalk network protocol;
- Netfilter;
(CVE-2022-49026, CVE-2022-49390, CVE-2024-47691, CVE-2024-49935,
CVE-2024-50067, CVE-2024-50095, CVE-2024-50196, CVE-2024-53090,
CVE-2024-53218, CVE-2025-21855, CVE-2025-37958, CVE-2025-38666,
CVE-2025-39964, CVE-2025-39993, CVE-2025-40018)
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
osv·2025-12-15·CVSS 5.5
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- ACPI drivers;
- Hardware monitoring drivers;
- InfiniBand drivers;
- MTD block device drivers;
- Network drivers;
- DesignWare USB3 driver;
- Ceph distributed file system;
- Network file system (NFS) server daemon;
- NILFS2 file system;
- File systems infrastructure;
- Tracing infrastructure;
- Appletalk network protocol;
- IPv6 networking;
- Netfilter;
(CVE-2021-47146, CVE-2021-47269, CVE-2021-47385, CVE-2021-47634,
CVE-2022-49026, CVE-2024-49935, CVE-2024-50067, CVE-2024-50095,
CVE-2024-50179, CVE-2024-53112, CVE-2024-53217, C
OSV
linux-fips vulnerabilities
osv·2025-12-15·CVSS 5.5
linux-fips vulnerabilities
linux-fips vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- ACPI drivers;
- Hardware monitoring drivers;
- InfiniBand drivers;
- MTD block device drivers;
- Network drivers;
- DesignWare USB3 driver;
- Ceph distributed file system;
- Network file system (NFS) server daemon;
- NILFS2 file system;
- File systems infrastructure;
- Tracing infrastructure;
- Appletalk network protocol;
- IPv6 networking;
- Netfilter;
(CVE-2021-47146, CVE-2021-47269, CVE-2021-47385, CVE-2021-47634,
CVE-2022-49026, CVE-2024-49935, CVE-2024-50067, CVE-2024-50095,
CVE-2024-50179, CVE-2024-53112, CVE-2024-53217, CVE-2025-21715,
CVE-2025-21722, CVE-
OSV
linux-azure, linux-azure-4.15, linux-oracle, vulnerabilities
osv·2025-12-12·CVSS 5.5
linux-azure, linux-azure-4.15, linux-oracle, vulnerabilities
linux-azure, linux-azure-4.15, linux-oracle, vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- ACPI drivers;
- Hardware monitoring drivers;
- InfiniBand drivers;
- Mailbox framework;
- Network drivers;
- AFS file system;
- Ceph distributed file system;
- Network file system (NFS) server daemon;
- NILFS2 file system;
- File systems infrastructure;
- KVM subsystem;
- L3 Master device support module;
- Tracing infrastructure;
- Memory management;
- Appletalk network protocol;
- Netfilter;
- Open vSwitch;
(CVE-2021-47385, CVE-2022-49026, CVE-2022-49390, CVE-2024-49935,
CVE-2024-49963, CVE-2024-50067, CVE-2024-50095, CVE-2024-5
OSV
linux-fips, linux-aws-fips, linux-gcp-fips vulnerabilities
osv·2025-12-11·CVSS 7.8
linux-fips, linux-aws-fips, linux-gcp-fips vulnerabilities
linux-fips, linux-aws-fips, linux-gcp-fips vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- ACPI drivers;
- InfiniBand drivers;
- Media drivers;
- Network drivers;
- Pin controllers subsystem;
- AFS file system;
- F2FS file system;
- Tracing infrastructure;
- Memory management;
- Appletalk network protocol;
- Netfilter;
(CVE-2022-49026, CVE-2022-49390, CVE-2024-47691, CVE-2024-49935,
CVE-2024-50067, CVE-2024-50095, CVE-2024-50196, CVE-2024-53090,
CVE-2024-53218, CVE-2025-21855, CVE-2025-37958, CVE-2025-38666,
CVE-2025-39964, CVE-2025-39993, CVE-2025-40018)
OSV
linux, linux-aws, linux-aws-5.4, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-xilinx-zynqmp vulnerabilities
osv·2025-12-10·CVSS 7.8
linux, linux-aws, linux-aws-5.4, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-xilinx-zynqmp vulnerabilities
linux, linux-aws, linux-aws-5.4, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-xilinx-zynqmp vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- ACPI drivers;
- InfiniBand drivers;
- Media drivers;
- Network drivers;
- Pin controllers subsystem;
- AFS file system;
- F2FS file system;
- Tracing infrastructure;
- Memory management;
- Appletalk network protocol;
- Netfilter;
(CVE-2022-49026, CVE-2022-49390, CVE-2024-47691, CVE-2024-49935,
CVE-2024-50067, CVE-2024-50095, CVE-2024-50196, CVE-2024-53090,
CVE-2024-53218, CVE-2025-21855, CVE-2025-37958, CVE-2025-38666,
CVE-2025-399
OSV
linux-gcp-fips vulnerabilities
osv·2025-12-04·CVSS 5.5
linux-gcp-fips vulnerabilities
linux-gcp-fips vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- ACPI drivers;
- Hardware monitoring drivers;
- InfiniBand drivers;
- Mailbox framework;
- Network drivers;
- AFS file system;
- Ceph distributed file system;
- Network file system (NFS) server daemon;
- NILFS2 file system;
- File systems infrastructure;
- KVM subsystem;
- L3 Master device support module;
- Tracing infrastructure;
- Memory management;
- Appletalk network protocol;
- Netfilter;
- Open vSwitch;
(CVE-2021-47385, CVE-2022-49026, CVE-2022-49390, CVE-2024-49935,
CVE-2024-49963, CVE-2024-50067, CVE-2024-50095, CVE-2024-50179,
CVE-2024-53090, CVE-2024
OSV
linux-gcp, linux-gcp-4.15, linux-hwe vulnerabilities
osv·2025-12-04·CVSS 5.5
linux-gcp, linux-gcp-4.15, linux-hwe vulnerabilities
linux-gcp, linux-gcp-4.15, linux-hwe vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- ACPI drivers;
- Hardware monitoring drivers;
- InfiniBand drivers;
- Mailbox framework;
- Network drivers;
- AFS file system;
- Ceph distributed file system;
- Network file system (NFS) server daemon;
- NILFS2 file system;
- File systems infrastructure;
- KVM subsystem;
- L3 Master device support module;
- Tracing infrastructure;
- Memory management;
- Appletalk network protocol;
- Netfilter;
- Open vSwitch;
(CVE-2021-47385, CVE-2022-49026, CVE-2022-49390, CVE-2024-49935,
CVE-2024-49963, CVE-2024-50067, CVE-2024-50095, CVE-2024-50179,
CV
OSV
linux-aws-fips, linux-fips vulnerabilities
osv·2025-12-03·CVSS 5.5
linux-aws-fips, linux-fips vulnerabilities
linux-aws-fips, linux-fips vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- ACPI drivers;
- Hardware monitoring drivers;
- InfiniBand drivers;
- Mailbox framework;
- Network drivers;
- AFS file system;
- Ceph distributed file system;
- Network file system (NFS) server daemon;
- NILFS2 file system;
- File systems infrastructure;
- KVM subsystem;
- L3 Master device support module;
- Tracing infrastructure;
- Memory management;
- Appletalk network protocol;
- Netfilter;
- Open vSwitch;
(CVE-2021-47385, CVE-2022-49026, CVE-2022-49390, CVE-2024-49935,
CVE-2024-49963, CVE-2024-50067, CVE-2024-50095, CVE-2024-50179,
CVE-2024-530
OSV
linux, linux-aws, linux-aws-hwe, linux-kvm, linux-oracle vulnerabilities
osv·2025-12-03·CVSS 5.5
linux, linux-aws, linux-aws-hwe, linux-kvm, linux-oracle vulnerabilities
linux, linux-aws, linux-aws-hwe, linux-kvm, linux-oracle vulnerabilities
Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:
- Cryptographic API;
- ACPI drivers;
- Hardware monitoring drivers;
- InfiniBand drivers;
- Mailbox framework;
- Network drivers;
- AFS file system;
- Ceph distributed file system;
- Network file system (NFS) server daemon;
- NILFS2 file system;
- File systems infrastructure;
- KVM subsystem;
- L3 Master device support module;
- Tracing infrastructure;
- Memory management;
- Appletalk network protocol;
- Netfilter;
- Open vSwitch;
(CVE-2021-47385, CVE-2022-49026, CVE-2022-49390, CVE-2024-49935,
CVE-2024-49963, CVE-2024-50067, CVE-2024-50095
GHSA
GHSA-99wc-552w-7m28: In the Linux kernel, the following vulnerability has been resolved:
posix-cpu-timers: Cleanup CPU timers before freeing them during exec
Commit 55e8
ghsa_unreviewed·2025-06-18
CVE-2022-50095 [HIGH] CWE-416 GHSA-99wc-552w-7m28: In the Linux kernel, the following vulnerability has been resolved:
posix-cpu-timers: Cleanup CPU timers before freeing them during exec
Commit 55e8
In the Linux kernel, the following vulnerability has been resolved:
posix-cpu-timers: Cleanup CPU timers before freeing them during exec
Commit 55e8c8eb2c7b ("posix-cpu-timers: Store a reference to a pid not a
task") started looking up tasks by PID when deleting a CPU timer.
When a non-leader thread calls execve, it will switch PIDs with the leader
process. Then, as it calls exit_itimers, posix_cpu_timer_del cannot find
the task because the timer still points out to the old PID.
That means that armed timers won't be disarmed, that is, they won't be
removed from the timerqueue_list. exit_itimers will still release their
memory, and when that list is later processed, it leads to a
use-after-free.
Clean up the timers from the de-threaded task before freeing them. This
prevents a reported
OSV
CVE-2022-50095: In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: Cleanup CPU timers before freeing them during exec Commit 55e8c8
osv·2025-06-18·CVSS 7.8
CVE-2022-50095 [HIGH] CVE-2022-50095: In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: Cleanup CPU timers before freeing them during exec Commit 55e8c8
In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: Cleanup CPU timers before freeing them during exec Commit 55e8c8eb2c7b ("posix-cpu-timers: Store a reference to a pid not a task") started looking up tasks by PID when deleting a CPU timer. When a non-leader thread calls execve, it will switch PIDs with the leader process. Then, as it calls exit_itimers, posix_cpu_timer_del cannot find the task because the timer still points out to the old PID. That means that armed timers won't be disarmed, that is, they won't be removed from the timerqueue_list. exit_itimers will still release their memory, and when that list is later processed, it leads to a use-after-free. Clean up the timers from the de-threaded task before freeing them. This prevents a reported use-
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/541840859ace9c2ccebc32fa9e376c7bd3def490https://git.kernel.org/stable/c/9e255ed238fc67058df87b0388ad6d4b2ef3a2bdhttps://git.kernel.org/stable/c/b2fc1723eb65abb83e00d5f011de670296af0b28https://git.kernel.org/stable/c/e362359ace6f87c201531872486ff295df306d13https://git.kernel.org/stable/c/e8cb6e8fd9890780f1bfcf5592889e1b879e779c
2025-06-18
Published